Charge mixing device



Feb; 3, 1931. A.'DEFRANCE ET AL 0,

CHARGE MIXING DEVICE Filed Oct. e, 1926 Y 2 \Hi 11 u Pierre l ersil/e Atomsy Patented Fees; 1931 a. 1390,854

UNITED STATE ,7 PATENT ABEL nErnANon rinnnn vnnsinnn, or Piers, mama? II v cnAnen-lurxme'nnvrcn i i g i I Application filed October 9, 1926,Serial NoL 1 40,6 55,iand in France .i neic', 1926. Y The inventionrelates to charge mixing de- 'vention each aperture in theplates' may bevices for internal combustion engines adapt provided with asubstantially ovoid element t ed to consume a mixture of airandhydrolongitudinally movable within the'aperture carbon fuel and moreparticularly heavy fuel. 1n question so that all of the apertures may 5The invention'h'as for its ob'ect to rovide be artl closed when the enine iso eratin 55 l P P y t: g P a a device of this character adapted-tobe disunderlight loadconditions. 1 posed between the engine and thecarburettor The invention will now be described by operatinginconjunction therewith, and to Way of example with'reference to-theaccom-' finish the mixing of the combustible mixture panyingdiagrammatic drawings'inwhich 10 supplied by the carburettor so as toensure Figures land? are longitudinal and trans- 60 perfect-carburation"while at the same time verse sectional views respectivelyofone, 'emrealizing a substantial economy in fuel. bodiment'of theinvention, Fig. 3 being 'a More specifically the invention relates totransverse sectionalview of a modifiedconapparatus of the kindcomprising aseries of stru'ctional form-cf theinvention. Y 5 p iperforated plates heated in a suitable man-. Refer-ringnowto Figures 1-and 3, it will 65 ner, and which the combustible mixture supbe observedthat theconduit 1 leading from plied by the carburettor has to traverse,the the carburettor (not shown) is provided with, mixture during itspassage thus being suca throttle valve 2, the charge mixing andcessively compressed and expanded whereby atomizing device, whichismounted within in combination with the friction of the mizrtheinduction conduit between said throttle V ture against the walls of theperforations a valve and the engine 3,'being secured tofthe perfectlyhomogeneous mixture is obtained. latter and'comprising a tubularmetallic ele- According to the present invention the ment 4 adapted tobe heated by direct con- 1 plates are each provided with a comparativeduction from the engine casing. A suitable ly large numberof conicalapertures for the arrangement'may also be provided for 'heat purpose ofdividing the combustible mixture ing said; element 4 from the exhaustconduit traversing the device into a comparatively 0f the engine or fromwater supplied from large number of very small jets of mixture thecooling radiator of the-engine. VJithin so that all the particles ofeach jet of mixthe tubular element i a series of plates 5 ture arethoroughly heated the advantages are'niounted in intimate contact withthe so of such a constructional form of device beelement l so that heatis conducted directly ing,.further that high temperatures for heatfromthe latterto the plates 5 which in the ing purposes may be avoided whilepermitembodiment illustrated are relatively thick ting the attainment ofa sufficiently high and 'forthis purpose.

' uniform temperature throughout the A comparatively large number of"aper- 85 ture. tures 6 of conical shape are provided inthe Anotheradvanta e of the inventionis that lates 5the lates born in contact withone 2 V l I by arranging a suitable number of the plates. another andthe apertures G n communicain a series with the conical apertures ineach tion with one another as illustrated in the 40 plate in line withthe corresponding apertures 'draw1ng. The plates 5 may however be as inthe other plates and with the narrow ends spaced apart frorn one anotherf desired. of the apertures turned towards the engine, The mixture'lssupplie'dby the carburettor the passage of burning mixture to thecarassociatedwlth'thedevice'ln a "more or less burettor u on a back-firetakin lace is homo eneous state and-flows past the throttle a P 1 e; p gi prevented. I valve-2, when it is open, and. through the In addition tothe regular air inlet or inlets series of apertures'ti, thereby beingsubjected of the carburettor an additional adj table successively tocompression and expansion air inlet may be provided in the induction andalso heated before'being finally drawn conduit on the carburettor sideof the plates. into theengine l I '50 According to a further feature ofthe inv It is to be noted that, the narrow ends of plied by thecarburettor, thus the perforations 6, being turned towards the engine 3,the passage ofthe burning mixture to the carburettor upon a back-firetaking place is substantially prevented.

In addition to the usual air intake or intakes of the carburettor, weprovide an adjustable additional air intake, diagrammatically shown at7, permitting the variation at will of the quantity of air, admitted tothe mixture according to the tel'nperature and the hygrometric stateofthe'air and to the quality of the fuel employed. When the engine ishot, A and the external temperature favorable, a supplementary airadmission is vefl'ected through intake '5, this additional air, upon itsaassage through the apertures in the plates, mixing intimately with thefirst mixture suprealizing an economy in fuel. 7

In the embodiment shown in Fig. 3, rods 8 carrying substantially ovoidelements 9 are provided, these rods extending along the center lines ofthe apertures, and one element 9 being provided in each aperture.

The rods 8 are solidary joined, forexample by a plate 10, andconnectedby a linked rodvll to any suitable controlling device. Saiddevice may be realized, as shown in Fig. 3, by an operativefconnectionwith the throttle valve 2 of the carburetor in-such a manner that theelements 9 will partly obturate the apertures G when the engine isrunning under light load conditions. A safety device may be furtherprovided for locking the rods 8 in aposition in which the elements 9completely obturate the apertures 6 thereby preventing the operation ofthe engine and consequently thetheft of the automobile, for example, ofwhich the engine forms the power unit. Said locking device may berealized as shown, Fig. 3, by a small plate 12 which slides in the body4 and maintainsthe plate 10 in the position 10 The plate 12 isactuatedby a bent lever 13 and a rod 14; said latter can be locked by anysuitable bolt or padlocln Claims r '1'. A charge mixing device forinternal combustion engines comprising a tubular metallic housing, asuccession of superposed thick plates and in contact relation, anumthickness of each plate being arranged in line with the correspondingapertures in the other plates, the narrow ends of the apertures beingturned towards the engine, rods extending through said apertures and sopoplate having a plurality of conical apertures therein aligned with theapertures of the other plates and providing a plurality of 1 parallelpassages of alternating reduced and enlarged cross section the narrowends of all the apertures being turned towards the engme.

PIERRE VERSILLE. ABEL DEFRANCE.

ber of uniformly shaped conical apertures provided in the thickness ofeach plate being arranged in line with the corresponding apertures inthe other plates with the narrow end of the aperture of one plateadjacent the wider end otthe aperture of the adjacent plate, the narrowends of alltheapertures being turned towards the engine.

2. A charge mixing device for internal combustion en ines comprising atubular metallic housing, a succession of superposed thick plates of acertain thickness and in contact relation, a number of uniformly shapedconical apertures provided in the arranged in contacting relationtherein each 7

